Memcached is an excellent cache store, and Dalli is the best way to interact with it through Ruby. Here I show various ways to use Memcached in a Rails app including how to set it up in production.
(12 minutes)

It is important to protect a user's private information with HTTPS. Here you will learn how to get it working on your local machine, configure Rack SSL, install certificates for production, and more.
(14 minutes)